Kitchen Backsplash Tile Calculator

The standard kitchen backsplash measures 18 inches (1.5 feet)from the top of the countertop to the bottom of the upper cabinets. This counter-to-cabinet measurement is the most common configuration and what most tile shops assume when you mention "backsplash."

Some homeowners opt for a full-height backsplash that extends all the way to the ceiling (36–54 inches), while others install a minimal 4-inch backsplash just to protect the wall directly behind the countertop. The 18-inch standard remains the most popular choice because it provides good wall protection without requiring excessive tile.

Your total backsplash area depends on both the height and the linear footage of counter space along your walls. Here are typical measurements by kitchen layout:

Measure each wall section individually and add them together for the most accurate result. Don't forget to include the area behind the stove if you plan to tile there.

Kitchen backsplashes almost always have obstacles — electrical outlets, light switches, and sometimes windows. You need to subtract these areas from your total square footage, but don't reduce your tile order by the full cutout amount because you still need whole tiles to make the cuts around each obstacle.

A standard electrical outlet cover plate measures approximately 2.75 × 4.5 inches, taking up about ~8 sq inches (~0.06 sq ft) each. Light switches are slightly smaller at approximately 2.75 × 4 inches, or about ~7 sq inches (~0.05 sq ft) each. While these individual deductions are small, a kitchen with 6–8 outlets and switches can add up.

For windows, measure the exact width and height of the opening within the backsplash area. If a window extends above the backsplash zone, only subtract the portion that falls within your 18-inch tiling height.

The area behind and above the stove requires special attention. If you have a range hood or over-the-range microwave, the wall space they cover may or may not need tile depending on your design preference and the type of hood installed.

Standard range hoods are either 30 inches or 36 inches wide, matching common stove widths. The height of the excluded area varies — some hoods mount flush to the wall and cover the full backsplash zone (18 inches), while others leave a gap that should be tiled for protection against cooking splatter.

To calculate the excluded area, multiply the width of the hood or microwave by its height: Width × Height = Excluded Area. For a 30-inch hood covering the full 18-inch backsplash zone, that's 30" × 18" = 540 sq in ÷ 144 = 3.75 sq ft excluded.

When in doubt, tile behind the hood. The extra 3–5 sq ft of tile is inexpensive insurance against future remodeling headaches.

The 3×6-inch subway tileis the most popular backsplash tile in America — and for good reason. It's affordable ($0.15–$0.75 per tile), widely available, easy to cut, and works with nearly any kitchen style from farmhouse to modern. Each 3×6 tile covers 0.125 square feet (18 sq inches ÷ 144).

Example: 30 sq ft backsplash with 3×6 subway tiles

Subway tiles are sold individually or by the box. A standard box contains approximately 80 tiles (~10 sq ft). For our 30 sq ft example, you'd need about 3 boxes. Always round up to the next full box and keep a few extras for future repairs.

The tile pattern you choose affects both the look of your backsplash and how much tile you need to order. More complex patterns require more cuts, which means more waste. Here are the most popular backsplash patterns ranked by difficulty and waste factor:

For most homeowners, the running bond (brick) patternis the best choice for a backsplash. It's forgiving for beginners, hides imperfections in the wall, and the offset alignment naturally draws the eye across the room. If you want to explore all the available patterns, check out our tile pattern gallery or read the herringbone tile layout calculator guide for advanced pattern planning.